Suppose the height of adult males in the United States is normally distributed with a mean of 70 inches and a standard deviation of 3 inches.

What height separates the top 10% of males from the bottom 90%?

What twoheights separate the middle 50% of males from the rest?

Would a height of 75 inches be considered unusual relative to this population? Use your knowledge of the standard of "usual" and "unusual" in regards to the normal distribution that we use in statistics to answer this question. Show calculations to support your answer and explain thoroughly.